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Aged 539 Graduate Internship Report- Mount Whitney High School, Matthew C. Medeiros

Agricultural Education: Graduate Internship Reports

This project reviews the Mount Whitney High School Agricultural Education Program. Through evaluation of our program's needs, there was a lack of chapter promotion outside of social media. A chapter website was created to highlight Classroom, FFA, and SAE opportunities available to students in our program.

Alexander Asboth: Hungarian Separatist And Union Civil War General, Paul T. Brueske

Graduate Theses and Dissertations (2019 - present)

This thesis reveals the experiences of a Hungarian Separatist, Alexander Asboth, and how he applied those experiences in the American Civil War. It examines Asboth’s biography, his expansive view of the Union, and how he differed from many commanding officers in the Western theater. Moreover, this thesis illuminates Asboth’s military service, including his leadership of a diverse force at Barrancas, Florida, and adds to the understudied collaboration of foreign-born officers and Black soldiers in Gulf Coast Civil War history.

During the 1848 Hungarian separatist movement, Asboth served as an Army staff officer under the leader Lajos Kossuth. However, the separatists …

Application Of Graph Neural Networks On Phase Space Graphs For Cybersecurity, Parker H. Cole

Graduate Theses and Dissertations (2019 - present)

Non-linear phase space analysis may be used to represent time-series data as graph data with transitions between states in the time domain. By studying these transitions, we can predict anomalies within the system. Previous research has demonstrated success in learning from phase graphs for malware and seizure detection. These solutions either require extracting global features or converting the graph into an image for convolutional neural networks (CNNs), which adds a layer of complexity and limits the size and potential expressiveness of a graph. To sidestep current limitations, this study proposed Graph Neural Networks (GNNs) for analyzing phase graphs. GNNs do …

Feedback Strategies In The Market With Uncertainties, Mustapha Nyenye Issah

Graduate Theses and Dissertations (2019 - present)

This paper explores how established firms use strategic advertising to deter new competitors in uncertain markets. Specifically, it models a situation where market demand evolves unpredictably - captured by the CKLS stochastic process, and the incumbent firm may be either strong or weak, a fact hidden from potential entrants. For a company already in the market, advertising is not just about driving immediate sales, it is a strategic tool to project an image of strength and deter potential new competitors. On the other side, a business thinking about entering that market faces a high-stakes, irreversible decision. It will typically hold …

Taxonomy Of Endophytic Fungi Associated With Vallisneria Neotropicalis, Md. Arafat Rashid

Graduate Theses and Dissertations (2019 - present)

This study presents the first comprehensive taxonomic and ecological investigation of endophytic fungi (EF) associated with the submerged aquatic macrophyte Vallisneria neotropicalis in the southern United States. Over a 12 month period, from April 2023 to March 2024, leaf samples were collected from two distinct sites in Mobile Bay, Alabama a disturbed, brackish Causeway location and a cleaner, less impacted site at Meaher State Park. Using culture dependent methods, a total of 257 fungal endophytes were isolated from 1,200 leaf segments. All isolates belonged to the phylum Ascomycota, distributed across 3 classes, 6 orders, 10 families, and 19 taxa. The …

Human Capital, Immigration, And Growth: A State-Level Dynamic Panel Study, William R. Cooper

Graduate Theses and Dissertations (2019 - present)

This study examines whether who immigrates, rather than how many, matters for state economic growth in the United States. It integrates a policy-relevant proxy for skill (H-1B approvals) into an augmented Solow framework that separates immigration's quantity channel from its human capital channel and estimates dynamic effects in a balanced quarterly panel of 50 states (2010 to 2023 ). The empirical strategy estimates a two-step difference GMM Arellano-Bond model that reinforces identification using a double/debiased machine learning (DML) variant that orthogonalizes high-dimensional nuisance components via cross-fitting. This design targets the distinct roles of immigrant headcount versus skill in per capita …

Modeling Flood Risks For Small-Scale Coastal Watershed Across Shared Socioeconomic Pathway Scenarios, Sebastian Loschner

Graduate Theses and Dissertations (2019 - present)

Coastal flooding, driven by the mixture of natural processes and human activities such as precipitation, waves, sea level rise, and urbanization, remains a growing concern. While recent flood-risk studies use IPCC's Shared Socioeconomic Pathways with climate projections to assess future flood exposure, smaller coastal watersheds, < 120,000 acres, remain insufficiently studied. Projected sea level rise is expected to intensify these impacts in smaller systems, potentially causing more severe flooding than reported for larger watersheds. To address this gap, this study used the SRH-2D model integrated with Aquaveo's Surface-water Modeling System to simulate flooding in the lower Fish River basin, Alabama. A coastal watershed sensitive to both riverine and tidal influences. Simulations tested different sea levels based on SSP scenarios corresponding to low, moderate, and high emissions for the years 2050 and 2100. Results indicate that the midcentury scenarios remained even in inundation extent and volume, between 9.9-10.4% compared to the 2020 baseline, the latter scenarios had a wider range in results of between 25.9-50.3% compared to the same baseline. Across scenarios, the most vulnerable and inundated areas of the smaller coastal watershed were the narrow points where upstream flow convene with downstream backwater. These findings highlight the need for futuristic location-specific flood mitigation strategies.

Dual-Task Interaction Between Vestibular Function And Cognitive Processing Using The P300 Event-Related Potential, Laurel Elise Money-Nolan

Graduate Theses and Dissertations (2019 - present)

Previous research has established links between vestibular function and cognitive processing, aging and cognitive function, and aging and vestibular function. Theories of cognitive resource allocation discuss how cognitive resources, such as attention, are devoted towards and divided between tasks when multitasking. This dual-task study, utilizing a balance task and a listening/cognitive task, across the young- and middle-aged adult age range, aimed to evaluate potential relationships between vestibular function, cognition, and age, and to examine how cognitive resources might be allocated under dual-task conditions.

The dual-task protocol in this study utilized an oddball paradigm with tonal stimuli to measure the P300 …

Short-Term Preeclampsia Prediction: Cutoff Variations For Sflt-1/Plgf In U.S. Patients With Or Without Hypertensive Disorders, Yaxin Li, Kristen Cagino, Jim Yee, Caroline Andy, Dajana Borova, Ayush Shah, Isla Racine, Tracy Grossman, Zhen Zhao

Student Papers, Posters & Projects

BACKGROUND: Preeclampsia (PE) is a complex disorder with significant maternal and fetal risks. The soluble fms-like tyrosine kinase-1 (sFlt-1) and placental growth factor (PlGF) ratio shows promise as a diagnostic tool, but its adoption in the U.S. remains limited due to the lack of accessible testing platforms, U.S.-based studies, and evidence-based implementation guidelines.

PATIENTS/MATERIALS AND METHODS: We conducted a cohort study to evaluate the sFlt-1/PlGF ratio for predicting PE within two weeks among pregnant individuals ≥18 years, ≥20 weeks gestation. Serum samples were obtained from routine prenatal visits or triage evaluations. sFlt-1/PlGF ratios were measured using Roche Elecsys assays, and …

Combine Ebis: A Novel Collaborative Method For Building Interventions From Existing Evidence-Based Interventions, Justin Knox, Kara Portier, Christopher Magana, Maggie Denning, Christopher M Ferraris, Emily Dove-Medows, Cho-Hee Shrader, Ohemaa Poku, Phil Kreniske, Robert Remien, Efrat Aharonovich, Jennifer C Elliott, Denis Nash, Kathryn Lancaster, Till Baernighausen, Kayo Fujimoto, Adam Carrico, John A Schneider, Alida Bouris, D Scott Batey, Sheree R Schwartz, Jose Bauermeister, Patrick S Sullivan, Joseph G Rosen, Gina Wingood, Milton Wainberg, Deborah Hasin, Elvin Geng, Patrick A Wilson, Stefan D Baral

Faculty, Staff and Student Publications

Purpose: Combining evidence-based interventions (EBIs) is a discrete process from adapting EBIs, and specific guidance for how to combine EBIs could be helpful amidst the proliferation of frameworks that combine and stage EBIs and calls for services to be combined or bundled. To address this gap, we developed and applied the COllaborative Method for Building INterventions from Existing Evidence-Based Interventions (COMBINE-EBIs) approach, a five-step process for combining EBIs.

Methods: The five steps of COMBINE-EBIs are: (1) Identify and Select EBIs, (2) Develop a Shared Conceptual Model, (3) Evaluate the Conceptual Model, (4) Create a Single Combined Protocol, and (5) Refine …

Twim #222: Biosensors In Bacteria, Madison Hayes, Alexis Austin, Dillon Nguyen, Angela Wilson, Rebecca Seipelt-Thiemann

School of Medical Diagnostics & Translational Sciences Publications

Podcast annotation TWiM #222: Biosensors in Bacteria from the weekly podcast series "This Week in Microbiology" (TWiM), a podcast where experts in microbiology discuss academic papers in their field in an informal way.

Twim #243: Beef And Bacillus, Sakiem Winston, Madison Wolford, Rebecca Seipelt-Thiemann, Angela Wilson

School of Medical Diagnostics & Translational Sciences Publications

Podcast annotation TWiM #243: Beef and Bacillus from the weekly podcast series "This Week in Microbiology" (TWiM), a podcast where experts in microbiology discuss academic papers in their field in an informal way.

Experimental Measurement Demonstration Of Initial And Steady-State Heights Of A Co2 Vertical Jet Fountain In Still Air, Brock Mcrae

Chemical Engineering Undergraduate Honors Theses

Atmospheric releases of heavier-than-air gases pose acute near-field hazards in low wind, yet the near-source behavior of vertical dense-gas jets in still air is sparsely documented. This thesis demonstrates a repeatable laboratory method for measuring the initial and steady-state rise heights of a carbon dioxide (CO₂) jet issued vertically from a floor nozzle in the CHRC ultra-low-speed wind tunnel under still-air conditions. Controlled mixtures (pure CO₂, 50/50 CO₂-air, 25/75 CO₂-air) were released at four flow rates (75, 100, 125, 150 LPM) with five repeats per condition. A fixed camera and tape-measure scale enabled video extraction of jet height using Kinovea …

Coherent Span-Valued 2d Tqfts, Sophia Marx, Rajan Amit Mehta

Mathematics Sciences: Faculty Publications

We consider commutative Frobenius pseudomonoids in the bicategory of spans, and we show that they are in correspondence with 2-Segal cosymmetric sets. Such a structure can be interpreted as a coherent 2-dimensional topological quantum field theory taking values in the bicategory of spans. We also describe a construction that produces a 2-Segal cosymmetric set from any partial monoid equipped with a distinguished element.

Pet Ownership And Health-Related Quality Of Life Among Middle-Aged Adults, Kristi Martin

Walden Dissertations and Doctoral Studies

Pet ownership continues to be part of modern society in the United States. Researchers have explored pet ownership’s impact on chronic diseases and aging populations, but research on health-related quality of life is limited. Grounded in the socioecological model, this quantitative study analyzed data from the 2005-2006 National Health and Nutrition Examination Survey (N = 10,348) to investigate the impact of pet ownership on health-related quality of life among low-income adults aged 30-50 years. Chi-square tests were performed to analyze the associations between age, income, gender, and race with three health-related quality of life metrics. Results showed no statistically significant …

The Lived Experiences Of Clinicians Who Treat Black Males Who Have Experienced Intimate Partner Violence, Gifty A. Acheampong

Walden Dissertations and Doctoral Studies

Intimate partner violence (IPV) is a global issue that negatively affects humanity. The harmful effects of IPV often result in lifelong consequences for victims. Researchers have consistently identified women and children as the primary victims of IPV, although men can also be affected. The social stigma around men seeking formal help as victims is that they must endure physical, emotional, financial, sexual, and psychological abuse in intimate relationships. Because psychological abuse is the most common form experienced by male IPV victims, there is a higher prevalence of IPV within the Black community. However, research on help-seeking behaviors among Black men …

Effective Change Management Strategies For Minimizing Financial Impact And Operational Disruption, Nhung K. Tran

Walden Dissertations and Doctoral Studies

Ineffective organizational change strategies represent a persistent challenge for organizations undergoing transitions. Business leaders who must maintain operational stability and safeguard financial performance during periods of change need effective strategies to support successful implementation. Grounded in an 8-step change model, organizational information processing, and stakeholder theories, the purpose of this qualitative pragmatic inquiry research project was to identify effective change management strategies used by business leaders to minimize financial loss and operational disruptions during transitions. The participants were eleven leaders from nonprofit, higher education, corporate, faith-based, agriculture, and military sectors who had effective change management strategies. Data were collected through …

Evaluation Of Heterotopic Ossification Following Two-Level Cervical Disc Arthroplasty With A Peek-On-Ceramic Artificial Disc, Jad Khalil, Hyan Bae, Pierce Nunley, K Brandon Strenge, Ashvin Patel, Armen Khachatryan, Rick Sasso, Andrew Park, Christopher Good, James Yue, Paul Kim, Richard Guyer

Conference Presentation Abstracts

Introduction: While favorable outcomes have consistently been reported following treatment of disc degeneration with cervical total disc replacement (cTDR), the development of heterotopic ossification (HO) at the index level has been reported. This study evaluated baseline characteristics potentially associated with the development of HO, as well as the impact of HO on 5-year clinical outcomes Materials and Methods: Baseline characteristics and 5-year outcomes of two-level polyetheretherketone (PEEK)-on-ceramic cTDR patients were stratified by worst HO grade at either index level through 5 years (defined as grade 1, 2, 3 or 4 on the McAfee/Mehren scale). Baseline index-level radiographic variables were stratified …

Coupling Material Formulation Strategies To Tailor Piezoelectric Properties Of Ceramic Lattices, Amanda Lauren Borgaro

Open Access Theses & Dissertations

This thesis examines the material formulation and infiltration processes required to create interpenetrating ceramic composites with a particular focus on developing piezoelectric ceramic-epoxy lattice structures (PCELS). Following this, a high–solid loading barium titanite photopolymer resin (BT40) was developed to produce BTO scaffolds with controlled porosity suitable for metal infusion. The resin’s shear-thinning behavior and scattering-dominated curing response enabled the formation of stable, uniform ceramic structures whose pore networks directly influence infiltration behavior. Building on this foundation, a low-temperature Field’s Metal (FM) infiltration method was established using controlled thermal equilibration and the melting of pre-formed alloy rods. By maintaining the ceramic …

Computational Methods For Complex Electromagnetic Geometries And Media, Edgar Bustamante

Open Access Theses & Dissertations

Additive manufacturing has enabled electromagnetic devices with increasingly complex geometries, but existing numerical tools remain limited in their ability to model and design such structures. This dissertation presents two major advancements that address these restrictions in the finite-difference frequency-domain method (FDFD) and the spatially-variant lattice algorithm (SVLA). These two numerical methods provide a foundation for future exploration in the simulation, optimization, and realization of next-generation electromagnetic devices. First, a general bianisotropic FDFD formulation based on the vector wave equation is presented that enables practical modeling of metamaterials using effective medium homogenized parameters rather than explicitly resolving subwavelength metamaterial features. The …

Algebraic Approach To Data Processing: Techniques And Applications, Julio Urenda

Open Access Theses & Dissertations

In many areas of human knowledge, symmetries and invariances play an important role. In fundamental physics, starting with Relativity Theory, new physical theories have been formulated in terms of invariances and of the corresponding transformation groups – i.e., in terms what a mathematician would call an algebraic approach. In engineering, devices like wind tunnels, which are based on scale-invariance, enable us to test smaller-scale models of the actual designs. In biological sciences, symmetries and invariances are extremely important in analyzing the shape and functioning of living beings, from mammals to viruses. Invariance and symmetry – in the form of fairness …

Associations Between School Experiences And Mental Health Outcomes By Gender Identity In Sexual And Gender Minority Youth In Texas And California, 2022 - 2024, Andrea Susana Yanez

Open Access Theses & Dissertations

Background: Depression and anxiety affect populations differently, with diagnoses disproportionately higher among sexual and gender minority groups, including LGBTQ+ youth. School experiences shape mental health; negative environments, bullying, and lack of support worsen outcomes, while affirming policies, peer support, and inclusive curricula are protective. Methods: This secondary analysis of the Family, Housing, and Me (FHAM) Project followed 83 LGBTQ+ youth from South Texas and California's Inland Empire (2022-2024). Data on sociodemographic characteristics, school experiences, and mental health outcomes were collected at baseline and at Waves I and II over 25 months. Analyses included descriptive statistics, monthly comparisons, and bivariate and …

Just Because They Can, Doesn’T Mean They Will: College Students’ Use And Non-Use Of Alcohol Protective Behavioral Strategies, Patrick Walter Mcclain

Graduate Theses and Dissertations

College students engage in high levels of alcohol consumption, which can increase their risk of alcohol-related negative consequences. To address this, researchers developed Alcohol Protective Behavioral Strategies (APBS), which are actions that students can take before or while drinking to limit their alcohol use and/or reduce their likelihood of experiencing drinking harms. However, students’ APBS use could depend on their perceived usefulness of these strategies, whether they engage in high-risk drinking, or both. Therefore, the present study aims to investigate: (1) what percentage of students (a) perceive each APBS as useful and (b) implement the APBS they find useful, (2) …

Understanding Outer Solar System Ice Composition Through Impact Processes: Simulations And Hydrates, Jill Rebecca Mcdonald

Graduate Theses and Dissertations

This work concerns solar system ices, particularly water ice and clathrate hydrates. Water ice is abundant as a mineral in the outer parts of the solar system, providing source material for the formation of clathrates. We explored constituents through a combination of numerical modeling and laboratory experiments. Understanding the differences and similarities between these materials can shed light on planetary habitability, composition, and evolution. Chapter one contains relevant background information. This chapter introduces the ices that will be studied and gives insight into the locations of interest within our solar system. It also explains the mechanics of impact cratering processes …

Impact Of Polystyrene Nanoplastics On Oncogenic Signaling Pathways In Prostate Cells, Luis Alfonso Adel-Alvarez

Open Access Theses & Dissertations

Prostate cancer (PC) remains the most prevalent malignant disease among the male population worldwide, with a dramatic increase observed in the European Union from the 1980s to the 2000s. The etiology of PC is attributed to both hereditary factors and environmental pollutants. Among these, endocrine disruptors and polystyrene nanoparticles (PSNPs) interact with the prostate gland via the circulatory system, inducing intense oxidative stress. This study aims to characterize, for the first time, the pathobiological effects of PSNPs in both non-malignant (RWPE1) and malignant (22RV1) prostate cell lines. The objective was to elucidate the mechanisms by which environmental pollutants, such as …

Multi-Hop Hybrid Graph Neural Network, James Arthur

Open Access Theses & Dissertations

Graph-structured data appear across diverse domains, such as social networks, citation graphs, biological systems, and knowledge bases. Graph Neural Networks (GNNs) have emerged as a powerful framework for learning on such data, yet existing architectures face significant challenges. Graph Convolutional Networks (GCNs) suffer from over-smoothing as depth increases, Graph Attention Networks (GATs) introduce computational and statistical instabilities, and naïve multi-hop propagation inflates memory and computation while failing to adapt to topology. These limitations motivate the development of a new framework that is both expressive and scalable. This dissertation proposes the Multi-Hop Hybrid Graph Neural Network (MHHGNN), a novel architecture that …

Advancing Effective Connectivity Analysis: Robust And Sparse Group Dynamic Causal Modeling Via Extended Parametric Empirical Bayes, Godfred Arhin

Open Access Theses & Dissertations

Dynamic Causal Modeling (DCM) provides a principled framework for estimating effective connectivity in neuroimaging data, with Parametric Empirical Bayes (PEB) enabling hierarchical inference across sessions and subjects. However, standard PEB assumes Gaussian distributions at all hierarchical levels and employs conventional shrinkage priors that do not enforce true sparsity, limiting robustness to outlying subjects and reducing sensitivity to parsimonious connectivity structures. This thesis introduces a robust, sparsity-inducing hierarchical extension to DCM-PEB that addresses these limitations through two key innovations. First, a Student-t group-level likelihood replaces the conventional Gaussian likelihood, automatically downweighting outlying subject-level parameters using adaptive precision weights while retaining computational …

Machine Learning And First-Principle Approach To The Stability And Properties Of Iron-Based Materials Under Extreme Conditions., Blaise Awola Ayirizia

Open Access Theses & Dissertations

This dissertation investigates the stability and physical properties of iron-based materials under extreme conditions, utilizing a combination of machine learning techniques and first principles calculations. In the first study, we employ Gaussian Process Regression (GPR) with a Marginalized Graph Kernel to analyze the mechanical stability of non-magnetic body-centered cubic (BCC) iron at high temperatures and pressures, similar to those found in Earth’s core. Our model, trained on data derived from ab initio molecular dynamics (AIMD) simulations, predicts the energy landscape, atomic forces, and potential pathways for instability in BCC iron. The findings suggest that BCC iron remains stable in extreme …

The Birth Of A City: The Politics Leading To The Incorporation Of The City Of El Paso, Michael Britt

Open Access Theses & Dissertations

While the history of the Civil War and Reconstruction-era focuses on the eastern United States, those events rippled across the country and affected the development of places far from the national capital and sites of the major battles. Most histories of El Paso, Texas focus on the era after the arrival of the railroad and growth of Fort Bliss as a major military installation. The region that now encompasses El Paso County, Texas experienced European migration centuries before the United States developed, and its Spanish and, later, Mexican background would impact how the area integrated with the United States. Texas …

Under Pressure: The Effects Of Stress And Cognitive Load On Interrogative Suggestibility, Claudia Cota

Open Access Theses & Dissertations

High-stakes situations, like police interrogations, can impair critical thinking due to stress and cognitive demands, making individuals more susceptible to suggestion. While much research focuses on children, young adults are also at risk for interrogative suggestibility, which can have serious legal consequences. This study experimentally manipulated stress and cognitive load to test whether both factors increase suggestibility in young adults, both independently and interactively, with the highest suggestibility among those experiencing both greater stress and cognitive demands. This was evaluated by examining both condition effects and self-reports of stress and cognitive load. College students (N = 230), aged 18 to …